Ethylenic Groups Are Non-conjugated, E.g., Divinylbenzene, Etc. Patents (Class 526/336)
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Patent number: 7700706Abstract: The present invention provides solid support media for use in oligomer synthesis, methods of producing the media, and methods of using the media. In some embodiments, the processes of the invention comprise (a) providing an organic phase comprising an olefin monomer, a cross-linker, a functionalizing reagent and an initiator; and (b) contacting the organic phase with an aqueous phase under conditions of time and temperature effective to form the polymeric bead.Type: GrantFiled: December 17, 2007Date of Patent: April 20, 2010Assignee: Isis Pharmaceuticals, Inc.Inventors: Vasulinga Ravikumar, Raju K. Kumar, Kenjirou Mori, Tatsuya Konishi, Ayako Matsunawa, Takeo Matsumura, Cheiko Kitaura, Gang Zhao
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Patent number: 7696291Abstract: A material having properties required for a chromatic aberration-free lens and excellent in moldability and impact resistance, which material is an amorphous fluoropolymer containing a carbon atom chain as a main chain and containing a fluorinated atom-bonded carbon atom as a carbon atom of the main chain, wherein vd>75, ?gF>0.50, and ??gF>0.03, where vd represents an Abbe number, ?gF represents a relative partial dispersion of a g-F line, and ??gF represents a deviation from a standard line of the relative partial dispersion of the g-F line.Type: GrantFiled: July 25, 2008Date of Patent: April 13, 2010Assignee: Asahi Glass Company, LimitedInventors: Hiromasa Yamamoto, Hideki Sato
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Patent number: 7691934Abstract: The invention is directed to a method of making ultra high molecular weight diallyldialkyl ammonium salt homopolymers, compositions thereof and use of compositions as a fixative in papermaking.Type: GrantFiled: October 19, 2006Date of Patent: April 6, 2010Assignee: Ciba Specialty Chemicals CorporationInventors: Zhiqiang Song, George William Schriver, Holger Reinicke
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Patent number: 7678870Abstract: A process is provided herein for preparing molecularly imprinted polymers for detecting a target analyte by Reversible Addition Fragmentation Chain Transfer (RAFT). The process includes providing a complex having the formula L3M wherein L is a ?-diketone ligand containing a chain transfer moiety and L3 can be the same or different ligands, and M is a lanthanide element; reacting the complex with the target analyte to provide an adduct containing the target analyte; co-polymerizing the adduct with a monomer and cross-linking agent to provide a polymer; and removing the target analyte from the polymer to provide the molecularly imprinted polymer.Type: GrantFiled: October 4, 2004Date of Patent: March 16, 2010Assignee: The Johns Hopkins UniversityInventors: Glen E. Southard, George M. Murray
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Publication number: 20100056714Abstract: Farnesene interpolymer comprises units derived from a farnesene (e.g., ?-farnesene or ?-farnesene) and units derived from at least one vinyl monomer. The farnesene interpolymer can be prepared by copolymerizing the farnesene and at least one vinyl monomer in the presence of a catalyst. In some embodiments, the farnesene is prepared from a sugar by using a microorganism. In other embodiments, the at least one vinyl monomer is ethylene, an ?-olefin, or a substituted or unsubstituted vinyl halide, vinyl ether, acrylonitrile, acrylic ester, methacrylic ester, acrylamide or methacrylamide, or a combination thereof.Type: ApplicationFiled: September 1, 2009Publication date: March 4, 2010Applicant: Amyris Biotechnologies, Inc.Inventor: Derek James MCPHEE
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Patent number: 7632904Abstract: Hydrophilic, arylsiloxy-containing monomers and macromonomers have at least a terminal hydrophilic group attached to an arylsiloxy group. The aryl groups attached to siloxy groups can be substituted with other hydrophilic groups. Polymers comprising such hydrophilic, arylsiloxy-containing monomers and macromonomers avoid or reduce the risk of forming vacuoles of absorbed water. Furthermore, such polymers have high refractive index, and, thus, are advantageously used for making ophthalmic devices, such as intraocular lenses, contact lenses, corneal rings, corneal inlays, and keratoprostheses.Type: GrantFiled: June 15, 2005Date of Patent: December 15, 2009Assignee: Bausch & Lomb IncorporatedInventors: Joseph C. Salamone, Jay F. Kunzler, Richard M. Ozark
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Patent number: 7608671Abstract: A norbornene ring-opened polymer hydrogenated product having a syndiotactic structure and a process for producing the same are disclosed. The ring-opened polymer hydrogenated product contains a repeating unit originating from a polycyclic norbornene monomer with three or more rings in the polymer repeating units, having a weight average molecular weight of 500 to 1,000,000, and having a racemo diad proportion of 51% or more. The process comprises a step of polymerizing a polycyclic norbornene monomer having three or more rings by solution polymerization using a group 6 transition metal compound with a hydroxyl group-containing aryloxy group or the like bonded thereto as a polymerization catalyst to obtain a ring-opened polymer and a step of hydrogenating double bonds in the main chain of the ring-opened polymer.Type: GrantFiled: August 12, 2004Date of Patent: October 27, 2009Assignee: Zeon CorporationInventors: Shigetaka Hayano, Yasuo Tsunogae
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Patent number: 7608658Abstract: This invention discloses a process for manufacturing an elastomeric article by liquid injection molding, said process comprising the steps of: (I) heating a curable composition comprised of (1) a liquid polymer comprised of repeat units that are derived from a conjugated diolefin monomer, wherein said liquid polymer has a weight average molecular weight which is within the range of 5,000 to 100,000, and wherein the liquid polymer is functionalized with an amine moiety, (2) a carbonyl inhibited platinum catalyst, and (3) a tetrakis(dialkyl siloxy) silane crosslinking agent, to a temperature which is within the range of 30° C. to 100° C.; (II) injecting the heated curable composition into a mold at a temperature which is within the range of 100° C. to 210° C. to produce the elastomeric article; and (III) removing the elastomeric article from the mold.Type: GrantFiled: November 7, 2008Date of Patent: October 27, 2009Assignee: The Goodyear Tire & Rubber CompanyInventors: Michael Joseph Rachita, Vanessa Marika Guscoff, Lawson Gibson Wideman
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Patent number: 7598330Abstract: The invention pertains to the use of Group 8 transition metal alkylidene complexes as catalysts for olefin cross-metathesis reactions. In particular, ruthenium and osmium alkylidene complexes substituted with an N-heterocyclic carbene ligand and at least one electron donor ligand in the form of a heterocyclic group are used to catalyze cross-metathesis reactions to provide a olefin products that are directly substituted with an electron-withdrawing group.Type: GrantFiled: April 7, 2003Date of Patent: October 6, 2009Assignee: California Institute of TechnologyInventors: Robert H. Grubbs, John P. Morgan, Jennifer A. Love, Tina M. Trnka
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Patent number: 7595362Abstract: Provided is curable resin composition which gives a cured article excellent in chemical resistance, dielectric properties, low water-absorption, heat resistance, flame retardance, and mechanical properties and which is usable in applications such as dielectric materials, insulating materials, heat-resistant materials, and structural materials. The curable resin composition includes a component (A) which is a polyphenylene ether oligomer having a number-average molecular weight of 700 to 4,000 and having a vinyl group at both end and a component (B) which is a solvent-soluble polyfunctional vinylaromatic copolymer which has structural units derived from monomers including a divinylaromatic compound (a) and an ethylvinylaromatic compound (b) and in which the content of repeating units derived from the divinylaromatic compound (a) is 20 mol % or higher, the ratio of the amount (wt. %) of the component (A) to that (wt. %) of the component (B) being (20 to 98):(2 to 80).Type: GrantFiled: January 26, 2005Date of Patent: September 29, 2009Assignee: Nippon Steel Chemical Co., Ltd.Inventors: Masanao Kawabe, Hiroyuki Yano, Yasuji Shichijo, Kouhei Tomari, Isamu Akiba
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Patent number: 7589159Abstract: The present invention provides a process for producing a resin powder containing a radical polymer having a volume-average primary-particle diameter of 1 nm to 300 nm and containing no impurities such as surfactants by a simple procedure without via multistage reactions. The process for producing a resin powder (J) comprising a radical polymer obtained by polymerizing a bifunctional radical-polymerizable monomer (A) with a ter- or higher functional radical-polymerizable monomer (B) in the presence of 15 mol % to 170 mol % polymerization initiator (C), based on the sum of monomers (A) and (B).Type: GrantFiled: May 7, 2004Date of Patent: September 15, 2009Assignee: Techno Network Shikoku Co., Ltd.Inventor: Tsuneyuki Sato
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Publication number: 20090209672Abstract: The present invention provides a copolymer rubber which contains only small amounts of impurities and is excellent in kneading processability, extrusion processability and retention of shape and a rubber composition containing the copolymer rubber, and further provides a rubber molded product which is obtained from the rubber composition, is excellent in surface appearance, strength properties, heat aging resistance and weathering resistance and has a low compression set. The copolymer rubber of the present invention comprises structural units derived from [A]ethylene, [B] an ?-olefin of 3 to 20 carbon atoms, [C] a non-conjugated polyene having one double bond between adjacent carbon atoms in one molecule, said double bond being capable of polymerization by a metallocene catalyst, and [D] a non-conjugated polyene having two of the above double bonds in one molecule, and the copolymer rubber satisfies specific requirements (1) to (5).Type: ApplicationFiled: December 4, 2008Publication date: August 20, 2009Inventors: Hiroki Ebata, Kotaro Ichino, Masao Kunizane
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Publication number: 20090149578Abstract: A comprising conjugated diene monomer units, and at least one polymer block B comprising conjugated diene monomer units and aromatic vinyl monomer units. This block copolymer is characterized in that (1) the polymer block A has a glass transition temperature of ?88° C. to ?45° C., (2) the polymer block B has a glass transition temperature of 30° C. to 90° C., (3) the content of aromatic vinyl monomer units in the whole block copolymer is 3-52 wt. %, (4) the aromatic vinyl block ratio in the whole block copolymer is smaller than 69 wt. %, and (5) the viscosity of a 5 wt. % solution of the block copolymer in styrene is 30-80 mPa·s. The block copolymer is useful as a resin modifier.Type: ApplicationFiled: July 27, 2006Publication date: June 11, 2009Inventors: Masao Nakamura, Kazuya Ito, Hidenori Yamagishi
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Patent number: 7541412Abstract: Disclosed is a method of producing a polyolefin composition comprising contacting a metallocene pre-catalyst with a substoichiometric amount of a co-catalyst; adding a first olefin monomer; and polymerizing the first monomer for a time sufficient to form the polyolefin. The method allows for the use of a minimum amount of activating co-catalyst, and allows for the production of stereoregular and non-stereoregular polyolefins. The use of configurationally stable metallocene pre-catalysts allows for the production of monomodal isotactic polyolefins having narrow polydispersity. The use of configurationally unstable metallocene pre-catalysts allows for the production of monomodal atactic polyolefins having narrow polydispersity. The method of the present invention optionally further comprises contacting the polyolefin with a second amount of said co-catalyst; adding a second olefin monomer; polymerizing said second olefin monomer to form a block-polyolefin composition.Type: GrantFiled: January 29, 2007Date of Patent: June 2, 2009Assignee: University of Maryland, College ParkInventor: Lawrence R. Sita
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Patent number: 7540962Abstract: The invention relates to a method of preparing spheroid polymer particles having a narrow size distribution by dispersion polymerization. This method comprises the steps of: providing a two-phase system in the form of a dispersion comprising an organic phase of droplets dispersed in an aqueous medium, mixing said organic phase in said aqueous medium under agitation without using a dispersion stabilizing agent to stabilize the dispersion, wherein the organic phase comprises at least a crosslinkable monomer, a polymerization initiator and an organic solvent for said monomer, and allowing the crosslinkable monomers to polymerize, while the two-phase system is agitated.Type: GrantFiled: May 31, 2007Date of Patent: June 2, 2009Assignee: Varian, B.V.Inventor: Frans Biermans
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Patent number: 7533706Abstract: Tire bead rubber compositions and tire beads made therewith are provided having good dimensional stability, processability and wire adhesion Tire bead rubber compositions containing crosslinked styrene butadiene rubber are also provided having good dimensional stability, processability and wire adhesion. Methods for manufacturing tire beads and tires using dimensionally stale compositions are further provided.Type: GrantFiled: May 21, 2002Date of Patent: May 19, 2009Assignee: Pirelli Tire LLCInventors: Benfei Hu, Stanley T. Esposito, Ronald E. Evans
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Patent number: 7514516Abstract: Disclosed are novel non-linear vinyl polymers comprised of a multifunctional peroxide, and a cross-linking agent and/or a chain transfer agent, and methods of making such polymers having: at least 0.03 branches/1000 backbone carbons; linear portions with a molecular weight (Mw) of 350,000 or less; 0.2 to 3.0 branches/molecule; or, a Mz/Mw of from 1.7 to 5.7. Methods of quantifying branching are disclosed using a linear reference having 0.0 to 0.06 branches/1000 backbone carbons along with SEC techniques and measurements of molecular weight, molecular size, and concentration. Also discovered is a vinyl polymer resin comprised of from 0.1 to 50 weight percent of non-linear polymers having at least 0.06 branches/1000 backbone carbons, where branching is measured using a heat polymerized polystyrene having from 0.0 to 0.06 branches/1000 backbone carbons as a linear reference.Type: GrantFiled: August 22, 2005Date of Patent: April 7, 2009Assignee: Fina Technology, Inc.Inventors: Brad Stiles, Jose M. Sosa, Cyril Chevillard, Aron Griffith, Jay L. Reimers
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Patent number: 7511106Abstract: This disclosure relates to olefin polymerization processes for polymerizing ethylene, higher alpha-olefin comonomer and at least one diene, especially vinyl norbornene (VNB), and especially processes for producing amorphous or semi-crystalline polymers such as ethylene propylene diene (EPDM).Type: GrantFiled: November 14, 2006Date of Patent: March 31, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventor: Periagaram Srinivasan Ravishankar
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Publication number: 20090018297Abstract: A halogenated butyl polymer having improved properties, the butyl polymer derived from a monomer mixture comprising a C4 to C8 monoolefin monomer, a C4 to C14 multiolefin monomer and a styrenic monomer with a catalyst system to produce the butyl polymer. The improved properties include faster cure, higher maximum torque, higher delta torque, relatively stable modulus over time, improved hot air aging properties and improved aged flexure properties. These improved properties are believed to result from direct interaction between the styrenic moieties in the polymer backbone with a crosslinking agent added to vulcanize the halogenated butyl rubber.Type: ApplicationFiled: June 3, 2008Publication date: January 15, 2009Inventor: Gabor Kaszas
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Patent number: 7470744Abstract: A copolymer useful as a demulsifier or water clarifier may be prepared by polymerizing at least one aromatic monomer having one or more polymerizable double bonds; at least one oleophilic monomer having one or more polymerizable double bonds; at least one ionizable monomer having a polymerizable double bond; and at least one hydrophilic monomer having one or more polymerizable double bonds, under polymerization conditions sufficient to prepare a copolymer. The copolymer may, in some embodiments, be prepared and used as a latex.Type: GrantFiled: April 12, 2006Date of Patent: December 30, 2008Assignee: Baker Hughes IncorporatedInventor: Jacqueline Behles
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Patent number: 7446151Abstract: The present invention relates to a continuous process for producing polymers at conversions ranging from 50% to 95% having a Mooney viscosity of at least 25 Mooney-units and a gel content of less than 15 wt. % containing repeating units derived from at least one isoolefin monomer, more than 4.1 mol % of repeating units derived from at least one multiolefin monomer and optionally further copolymerizable monomers in the presence of AlCl3 and a suitable proton source (e.g. water) or cationogen and at least one multiolefin cross-linking agent wherein the process is conducted in the absence of transition metal compounds and organic nitro compounds.Type: GrantFiled: August 31, 2007Date of Patent: November 4, 2008Assignee: Lanxess, Inc.Inventors: Rui Resendes, Gabor Kaszas, Mark J. Drewitt, Stephan Glander, Gerhard Langstein, Martin Bohnenpoll
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Patent number: 7425597Abstract: The molecular weight of cationic polymers, such as diallyldialkyl ammonium chloride, can be increased by controlled addition of a water-soluble radical initiator at an elevated reaction temperature with agitation to prepare high molecular weight, crosslinked, water-soluble cationic polymers.Type: GrantFiled: May 24, 2007Date of Patent: September 16, 2008Assignee: Ciba Specialty Chemicals Water Treatments Ltd.Inventor: Zhiqiang Song
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Patent number: 7407561Abstract: The present invention relates to a method for controlling pitch and stickies deposit in a pulp and papermaking process using crosslinked cationic polymers made by controlled addition of a water soluble radical initiator at reaction temperature with agitation for chain extension and crosslinking.Type: GrantFiled: April 20, 2004Date of Patent: August 5, 2008Assignee: Ciba Specialty Chemicals Water Treatments Ltd.Inventors: Zhiqiang Song, Philip Anson Ford
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Patent number: 7402646Abstract: Processes for preparing substantially linear polymers from diisopropenylbenzenes are provided. The polymers are useful in making a variety of products, including coatings, pigment dispersing agents, and stabilizers.Type: GrantFiled: May 27, 2005Date of Patent: July 22, 2008Assignee: E. I. du Pont de Nemours and CompanyInventors: Steven Dale Ittel, Alexei A. Gridnev
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Patent number: 7402645Abstract: The present invention relates to a soluble polyfunctional vinylaromatic copolymer improved in heat resistance, resistance to thermal decomposition, solvent solubility, and processability. The soluble polyfunctional vinylaromatic polymer is obtained by cationically polymerizing, at a temperature of 20 to 120° C., one or more monomer ingredients including 20 to 100 mol % divinylaromatic compound (a) in the presence of a donor ingredient, e.g., a quaternary ammonium salt, with the aid of a Lewis acid catalyst and an initiator represented by the following general formula (1) wherein R1 represents hydrogen or a monovalent C1-6 hydrocarbon group; R2 represents an aromatic or aliphatic hydrocarbon group having a valence of p; Z represents halogen or C1-6 alkoxy or acyloxy; and p is an integer of 1 to 6; provided that when two or more R1's and Z's are present per molecule, they may be identical to different from each other.Type: GrantFiled: January 26, 2005Date of Patent: July 22, 2008Assignee: Nippon Steel Chemical Co., Ltd.Inventor: Masanao Kawabe
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Publication number: 20080154029Abstract: The present invention relates to a sorbent material for separation and purification of biopolymers, particularly nucleic acids, having a solid support substantially modified with a copolymer coating comprising aromatic monomers and crosslinking compounds and unsaturated esters or ethers preferably attached to the support via a vinylchlorsilane. The use of these materials for separation of nucleic acids, particularly a one-step isolation of DNA from lysates of different biological sources, is an object of the invention as well as a chromatographic column or cartridge at least partially filled with the sorbent material of the invention, a membrane-like device comprising the sorbent material of the invention, and a kit comprising the sorbent material of the invention in bulk or packed in chromatographic devices as well as other devices necessary for performing sample preparations.Type: ApplicationFiled: April 1, 2005Publication date: June 26, 2008Applicant: NEXTEC GMBHInventors: Hamlet Balayan, Robert-Matthias Leiser, Lutz Plobner, Leonti E. Tkachenko, Gottfried Brem
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Patent number: 7390866Abstract: The present invention provides curable and cured propylene-based elastomers, optionally including a diene, and having isotactic polypropylene crystallinity, a melting point by DSC equal to or less than 110° C., and a heat of fusion of from 5 J/g to 50 J/g. The present invention also provides blend compositions comprising any of the propylene-based elastomers described herein. The present invention also provides compositions comprising any of the propylene-based elastomers described herein and 1 to 100 parts by weight of inorganic filler per 100 parts of polymer. The present invention also provides films, fibers, fabrics, molded objects, and extruded forms which include any of the inventive compositions described herein.Type: GrantFiled: November 12, 2004Date of Patent: June 24, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Sudhin Datta, Rul Zhao, Srivatsan Srinivas, Majia Y Amin, Periagaram S Ravishankar
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Patent number: 7358315Abstract: A thermoplastic allyloxymethylstyrene-based resin comprising structural units of the following formulas (I) and (II): as repeating units, wherein R represents a hydrogen atom or a hydrocarbon group, and m and n each denote an integer of 0 or 1 or higher, provided that m and n are not 0 at the same time.Type: GrantFiled: November 14, 2003Date of Patent: April 15, 2008Assignees: Fuji Electric Device Technology Co., Ltd.Inventors: Youichi Tei, Toshiyuki Kodaira
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Patent number: 7348391Abstract: The present invention provides solid support media for use in oligomer synthesis, methods of producing the media, and methods of using the media. In some embodiments, the processes of the invention comprise (a) providing an organic phase comprising an olefin monomer, a cross-linker, a functionalizing reagent and an initiator; and (b) contacting the organic phase with an aqueous phase under conditions of time and temperature effective to form the polymeric bead.Type: GrantFiled: September 2, 2005Date of Patent: March 25, 2008Assignees: Isis Pharmaceuticals, Inc., Nitto Denko CorporationInventors: Vasulinga Ravikumar, Raju K. Kumar, Kenjirou Mori, Tatsuya Konishi, Ayako Matsunawa, Takeo Matsumura, Cheiko Kitaura, Gang Zhao
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Patent number: 7345128Abstract: The present invention relates to a peroxide curable rubber compound comprising at least one elastomeric polymer comprising repeating units derived from at least one C4 to C7 isomonoolefin monomer, at least one C4 to C14 multiolefin monomer and at least one m- or p-alkylstyrene monomer.Type: GrantFiled: April 29, 2004Date of Patent: March 18, 2008Assignee: Lanxess Inc.Inventors: Rui Resendes, Adam Gronowski
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Patent number: 7342053Abstract: Producing a printed circuit board, by coating a resin composition comprising an aromatic cyanate compound having two or more cyanato groups in a molecule and a radical-polymerizable resin on a circuit substrate, photo-curing the resin composition, and thermally curing the photo-cured resin composition to thereby form an insulation layer, affords an insulation layer with improved surface smoothness and excellent dielectric properties.Type: GrantFiled: January 28, 2005Date of Patent: March 11, 2008Assignee: Ajinomoto Co., Inc.Inventor: Shigeo Nakamura
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Patent number: 7339018Abstract: Certain specific embodiments of the invention will now be discussed. For example, a process of preparing a copolymer composition that includes a diene-modified polypropylene copolymer is described, which process includes: contacting a metallocene catalyst compound with a polymerization medium that includes at least a propylene monomer and 2-methyl-1,5-hexadiene monomer or an ?, internal non-conjugated diene monomer; and conducting polymerization of the monomers in the presence of the metallocene catalyst compound for a time sufficient to provide a diene-modified polypropylene random copolymer that includes monomeric units derived from each of the monomers, and having from 0.0 wt % to 2.0 wt % ethylene and a heat of fusion of 25 J/g or more.Type: GrantFiled: November 19, 2003Date of Patent: March 4, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventor: Palanisamy Arjunan
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Patent number: 7323527Abstract: A method for producing a macroporous acrylic resin in an aqueous suspension from a C1-C4 alkyl acrylate, an organic solvent and a crosslinker.Type: GrantFiled: June 8, 2006Date of Patent: January 29, 2008Assignee: Rohm and Haas CompanyInventors: James Charles Bohling, Roy Jeffrey Furbank, Bruce Maurice Rosenbaum
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Publication number: 20070287760Abstract: A method for producing a macroporous acrylic resin in an aqueous suspension from a C1-C4 alkyl acrylate, an organic solvent and a crosslinker.Type: ApplicationFiled: June 8, 2006Publication date: December 13, 2007Inventors: James Charles Bohling, Roy Jeffrey Furbank, Bruce Maurice Rosenbaum
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Patent number: 7294681Abstract: This invention relates to a polymer of one or more C3 to C40 olefins, optionally one or more diolefins, and less than 15 mole % of ethylene, and polymerization processes for producing the same.Type: GrantFiled: October 15, 2003Date of Patent: November 13, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Peijun Jiang, Armenag Hagop Dekmezian, Jo Ann Marie Canich, Charles Lewis Sims, Ramin Abhari, Cesar Alberto Garcia-Franco, David Raymond Johnsrud
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Patent number: 7282548Abstract: The present invention relates to a continuous process for producing polymers at conversions ranging from 50% to 95% having a Mooney viscosity of at least 25 Mooney-units and a gel content of less than 15 wt. % containing repeating units derived from at least one isoolefin monomer, more than 4.1 mol % of repeating units derived from at least one multiolefin monomer and optionally further copolymerizable monomers in the presence of AlCl3 and a suitable proton source (e.g. water) or cationogen and at least one multiolefin cross-linking agent wherein the process is conducted in the absence of transition metal compounds and organic nitro compounds.Type: GrantFiled: February 11, 2004Date of Patent: October 16, 2007Assignee: Lanxess Inc.Inventors: R. Resendes, Gabor Kaszas, Mark J. Drewitt, Stephan Glander, Gerhard Langstein, Martin Bohnenpoll
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Patent number: 7265159Abstract: Process for preparing monodisperse weakly basic or optionally strongly basic anion exchangers of the poly(meth)acrylamide type, the ion exchangers themselves and their use.Type: GrantFiled: July 22, 2004Date of Patent: September 4, 2007Assignee: Bayer AktiengesellschaftInventors: Reinhold Klipper, Olaf Halle, Claudia Schmid, Wolfgang Podszun, Rüdiger Seidel, Hans-Karl Soest
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Patent number: 7241841Abstract: The random, hydrogenated copolymers according to the present invention of unsubstituted conjugated dienes and substituted conjugated dienes, having a glass transition temperature of ??60° C., an enthalpy of fusion of ?100 J/g and a content of residual double bonds in the range from 0 to 80%, are suitable for the production of rubber moldings of all kinds which have good resistance to ageing and high resilience at low temperatures. In particular, various tire components and industrial rubber articles may be mentioned as rubber moldings. The copolymers are also suitable for the rubber modification of brittle thermoplastics.Type: GrantFiled: May 6, 2005Date of Patent: July 10, 2007Assignee: Lanxess Deutschland GmbHInventors: Cristina Stere, Werner Obrecht, Udo Sondermann, Gerd Sylvester
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Patent number: 7238752Abstract: The molecular weight of cationic polymers, such as diallyldialkyl ammonium chloride, can be increased by controlled addition of a water-soluble radical initiator at an elevated reaction temperature with agitation to prepare high molecular weight, crosslinked, water-soluble cationic polymers.Type: GrantFiled: July 27, 2005Date of Patent: July 3, 2007Assignee: Ciba Specialty Chemicals Water Treatments Ltd.Inventor: Zhiqiang Song
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Patent number: 7230059Abstract: A process for producing an olefin-based copolymer, which comprises copolymerizing at least one olefin selected from the group consisting of ethylene and straight chain ?-olefins, and a vinyl compound (I) and a polyene (II) described below: Vinyl compound (I); a vinyl compound represented by the general formula CH2?CH—R, wherein the substituent R is a saturated hydrocarbon group and steric parameters Es and B1 of the substituent R are respectively ?1.64 or less and 1.53 or more; and Polyene (II); a compound having two or more of ethylene bonds and at least one combination of two ethylene bonds in which those are bonded to each other through at least three carbon atoms.Type: GrantFiled: December 18, 2003Date of Patent: June 12, 2007Assignee: Sumitomo Chemical Company, LimitedInventors: Nobuo Oi, Hitoshi Tsukui
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Patent number: 7223828Abstract: Certain specific embodiments of the invention will now be discussed. For example, a process of preparing a polymer composition that includes a branched crystalline diene-modified polypropylene random terpolymer is described, which process includes: contacting a metallocene catalyst compound with a polymerization medium that includes at least a propylene monomer, a first diene monomer, and a second diene monomer; and conducting polymerization of the monomers in the presence of the metallocene catalyst compound for a time sufficient to provide a branched crystalline diene-modified polypropylene random terpolymer that includes monomeric units derived from each of the monomers, and having from 0.0 wt % to 2.0 wt % ethylene and a heat of fusion of 30 J/g or more.Type: GrantFiled: November 19, 2003Date of Patent: May 29, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventor: Palanisamy Arjunan
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Patent number: 7217775Abstract: A rubber composition having improved processability and which provides a vulcanized rubber exhibiting excellent wear resistance and good tensile strength to service temperatures of up to about 150° C. The composition comprises (1) a crosslinked polymer particle having as repeat units (a) up to about 25% of a conjugated diene unit, (b) at least 70% of an aromatic vinyl unit, (c) about 15% to about 30% of a crosslinking monomer, and (d) about 0.Type: GrantFiled: April 20, 2004Date of Patent: May 15, 2007Assignee: The Goodyear Tire & Rubber CompanyInventor: Eric Sean Castner
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Patent number: 7214741Abstract: The present invention relates to a peroxide curable rubber compound containing at least one elastomeric polymer comprising repeating units derived from at least one C4 to C7 isomonoolefin monomer, at least one C4 to C14 multiolefin monomer, at least one p- or m-alkylstyrene monomer and at least one co-agent.Type: GrantFiled: August 10, 2004Date of Patent: May 8, 2007Assignee: Lanxess Inc.Inventors: Rui Resendes, Adam Gronowski
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Patent number: 7211642Abstract: A polymer comprises at least two types of monomer units selected from: (1) diethynyl benzene units, (2) triethynyl benzene units, and (3) ester units. After curing, the polymer may form a condensed polyaromatic dielectric having a dielectric constant of at most 2.0 at 1 MHz, an elastic modulus of at least 7.7 GPa, and a hardness of at least 2.0 GPa.Type: GrantFiled: March 29, 2005Date of Patent: May 1, 2007Assignee: The Board of Trustees of the Univeristy of IllinoisInventors: James Economy, Yongqing Huang
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Patent number: 7205370Abstract: A flower-like nano-particle composition including a poly (alkenylbenzene) core and a poly (conjugated diene) or a poly(alkylene) surface layer is provided. The nano-particles have a mean average diameter less than about 100 nm and are substantially free of chain ends. The nano-particles can be modified via, for example, hydrogenation. The nano-particles can advantageously be incorporated into rubbers, elastomers, and thermoplastics.Type: GrantFiled: January 12, 2004Date of Patent: April 17, 2007Assignee: Bridgestone CorporationInventors: Xiaorong Wang, Yoichi Ozawa, James E. Hall
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Patent number: 7205369Abstract: The molecular weight of cationic polymers, such as diallyldialkyl ammonium chloride, can be increased by controlled addition of a water-soluble radical initiator at an elevated reaction temperature with agitation to prepare high molecular weight, crosslinked, water-soluble cationic polymers.Type: GrantFiled: August 12, 2003Date of Patent: April 17, 2007Assignee: Ciba Specialty Chemicals Water Treatments Ltd.Inventor: Zhiqiang Song
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Patent number: 7193024Abstract: A polymer comprising units (1) derived from an alpha-olefin having at least 3 carbon atoms (1?), units (2) derived from divinylbenzene or C1-10hydrocarbyl substituted derivatives thereof (2?), and units (3) derived from ethylene (3?), the polymer comprising at least 75 mole % of units (1), from 0.01 to 5 mole % of units (2), and up to 20 mole % of units (3), the polymer having a branching factor BF 0.75.Type: GrantFiled: June 13, 2002Date of Patent: March 20, 2007Assignee: Dow Global Technology Inc.Inventors: Daniel J Arriola, Francis J. Timmers, David D. Devore, Oscar D. Redwine
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Patent number: 7183364Abstract: Disclosed is a method of producing a polyolefin composition comprising contacting a metallocene pre-catalyst with a substoichiometric amount of a co-catalyst; adding a first olefin monomer; and polymerizing the first monomer for a time sufficient to form the polyolefin. The method allows for the use of a minimum amount of activating co-catalyst, and allows for the production of stereoregular and non-stereoregular polyolefins. The use of configurationally stable metallocene pre-catalysts allows for the production of monomodal isotactic polyolefins having narrow polydispersity. The use of configurationally unstable metallocene pre-catalysts allows for the production of monomodal atactic polyolefins having narrow polydispersity. The method of the present invention optionally further comprises contacting the polyolefin with a second amount of said co-catalyst; adding a second olefin monomer; polymerizing said second olefin monomer to form a block-polyolefin composition.Type: GrantFiled: December 22, 2003Date of Patent: February 27, 2007Assignee: University of Maryland, College ParkInventor: Lawrence R. Sita
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Patent number: 7148303Abstract: The present invention relates to an elastomeric polymer having repeating units derived from at least one isomonoolefin monomer, at least one multiolefin monomer, at least one diisoalkenylbenzene monomer, and optionally further copolymerizable monomers, wherein the polymer has a Mooney viscosity (ML 1+8@125° C. according to ASTM D1646) of less than 40 units and a Shore A hardness higher than 65 points @ 23° C. (according to ASTM D2240) as well as a curable composition containing the elastomeric polymer and a shaped article manufactured from the curable composition.Type: GrantFiled: February 16, 2005Date of Patent: December 12, 2006Assignee: Lanxess Inc.Inventors: Adam Gronowski, Akhtar Osman
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Patent number: 7148296Abstract: A thermoset composition exhibiting reduced water absorption in the cured state includes an olefinically unsaturated monomer and a capped poly(arylene ether) prepared by the reaction of an uncapped poly(arylene ether) with an anhydride capping agent. The capped poly(arylene ether) is isolated and/or purified by methods that reduce the concentrations of polar impurities that contribute to water absorption by the cured composition.Type: GrantFiled: October 3, 2003Date of Patent: December 12, 2006Assignee: General Electric CompanyInventors: Kenneth Paul Zarnoch, John Robert Campbell, Amy Rene Freshour, Hua Guo, John Austin Rude, Prameela Susarla, Michael Alan Vallance, Gary William Yeager